1df8bae1dSRodney W. Grimes /*-
251369649SPedro F. Giffuni * SPDX-License-Identifier: BSD-3-Clause
351369649SPedro F. Giffuni *
4df8bae1dSRodney W. Grimes * Copyright (c) 1992, 1993
5df8bae1dSRodney W. Grimes * The Regents of the University of California. All rights reserved.
6df8bae1dSRodney W. Grimes *
7df8bae1dSRodney W. Grimes * This software was developed by the Computer Systems Engineering group
8df8bae1dSRodney W. Grimes * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9df8bae1dSRodney W. Grimes * contributed to Berkeley.
10df8bae1dSRodney W. Grimes *
11df8bae1dSRodney W. Grimes * Redistribution and use in source and binary forms, with or without
12df8bae1dSRodney W. Grimes * modification, are permitted provided that the following conditions
13df8bae1dSRodney W. Grimes * are met:
14df8bae1dSRodney W. Grimes * 1. Redistributions of source code must retain the above copyright
15df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer.
16df8bae1dSRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright
17df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer in the
18df8bae1dSRodney W. Grimes * documentation and/or other materials provided with the distribution.
19fbbd9655SWarner Losh * 3. Neither the name of the University nor the names of its contributors
20df8bae1dSRodney W. Grimes * may be used to endorse or promote products derived from this software
21df8bae1dSRodney W. Grimes * without specific prior written permission.
22df8bae1dSRodney W. Grimes *
23df8bae1dSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24df8bae1dSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25df8bae1dSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26df8bae1dSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27df8bae1dSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28df8bae1dSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29df8bae1dSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30df8bae1dSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31df8bae1dSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32df8bae1dSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33df8bae1dSRodney W. Grimes * SUCH DAMAGE.
34df8bae1dSRodney W. Grimes */
35df8bae1dSRodney W. Grimes
36ab0de15bSDavid E. O'Brien #include <sys/cdefs.h>
37f313170dSBruce Evans #include <libkern/quad.h>
38df8bae1dSRodney W. Grimes
39df8bae1dSRodney W. Grimes /*
40df8bae1dSRodney W. Grimes * Divide two signed quads.
41df8bae1dSRodney W. Grimes */
42df8bae1dSRodney W. Grimes quad_t
__divdi3(quad_t a,quad_t b)434a8dea8cSEd Maste __divdi3(quad_t a, quad_t b)
44df8bae1dSRodney W. Grimes {
45df8bae1dSRodney W. Grimes u_quad_t ua, ub, uq;
46df8bae1dSRodney W. Grimes int neg;
47df8bae1dSRodney W. Grimes
489ac841e9SJohn Baldwin if (a < 0) {
499ac841e9SJohn Baldwin ua = -(u_quad_t)a;
509ac841e9SJohn Baldwin neg = 1;
519ac841e9SJohn Baldwin } else {
529ac841e9SJohn Baldwin ua = a;
539ac841e9SJohn Baldwin neg = 0;
549ac841e9SJohn Baldwin }
559ac841e9SJohn Baldwin if (b < 0) {
569ac841e9SJohn Baldwin ub = -(u_quad_t)b;
579ac841e9SJohn Baldwin neg ^= 1;
589ac841e9SJohn Baldwin } else
59df8bae1dSRodney W. Grimes ub = b;
60df8bae1dSRodney W. Grimes uq = __qdivrem(ua, ub, (u_quad_t *)0);
61df8bae1dSRodney W. Grimes return (neg ? -uq : uq);
62df8bae1dSRodney W. Grimes }
63